Bland-Altman Plot and Analysis - Statistical Software

NCSS Statistical Software 204-1 NCSS, LLC. All Rights Reserved. Chapter 204 Bland-Altman Plot and Analysis introduction The Bland-Altman (mean-difference or limits of agreement) plot and Analysis is used to compare two measurements of the same variable. That is, it is a method comparison technique. For example, an expensive measurement system might be compared with a less expensive one or an intrusive measurement system might be compared to one that is less intrusive. The technique is documented in a series of papers by J. Martin Bland and Douglas G. Altman (1983, 1986, and 1999). NCSS Statistical Software Bland-Altman Plot and Analysis 204-2 NCSS, LLC. All Rights Reserved. Repeatability An important part of method comparison is to understand how repeatable the measurement system is. This can only be understood by sampling each subject multiple times on the same method.

and Analysis Introduction The Bland-Altman (mean-difference or limits of agreement) plot and analysis is used to compare two measurements of the same variable. That is, it is a method comparison technique. For example, an expensive measurement system might be compared with a less expensive one or an intrusive measurement system might be

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